Keywords: Albert Miller Lea, Army, Army Corps of Engineers, Business, Changes in rivers, Daily journals, Des Moines River rapids, Diaries, journals, and letters, Diary entries, Environment, Erosion, Explorers, Father Jaques Marquette, Film, Grain milling industry, Henry Lewis, Ice, Ice industry, Iowa Public Television, Karl Bodmer, Land conservation, Larry Long, Lewis and Clark, Louis Joliet, Maximilian, Meriwether Lewis, Mills, Mississippi River, Missouri River, Mosquito Creek, Native Americans (American Indians), Panorama, Pioneers, Resources, Rivers, Steamboats, Television, The Gold Rush, The Pottawattamie Mill, Transportation, Wapsipinicon River, Water conservation, Water pollution, Water-power, Waverly, Wildlife conservation, Will Chandler, Zebulon Pike, “The Bertrand”